Entity pictures broken after the 2026.3 update

It has been reported for the Mushroom cards [here](https://community.home-assistant.io/t/post-2026-3-update-mushroom-update-card-picture-entity-not-displaying/993545), but obviously it's a general issue for all the custom cards. After the update there are only broken links displayed. Hasn't anybody else noticed that? <img width="498" height="67" alt="Image" src="https://github.com/user-attachments/assets/e9d71bef-5115-470d-86c1-3066af3f5932" />